Mudsport96
Full Access Member
Yeah i guess youre right. If the pedal was wigging out it should throw a code.
Occasional transmission slip from complete stop
- Thread starter clandr1
- Start date
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rockola1971
Full Access Member
Fluid change on a 195k tranny caused internal seals to swell. One is leaking and eventually it will throw its guts up on you. There is no good "tranny slip". When it slips it is the clutches slipping and overheating the fluid. Be prepared for a Rebuild.
Tonyrodz
Resident Resident
In a situation like that should he just have left the trans alone? Just leave the old fluid in--no fluid change?
Mudsport96
Full Access Member
Does the engine rev up when this happens and it just doesn't downshift and start moving? Or you floorboard it and just nothing?
OP
OP
clandr1
Full Access Member
The latter - I floor it and nothing at all happens for 1-2 seconds. The transmission is not slipping in that scenario.
rockola1971
Full Access Member
At the most a pan and filter change with a transmission with that high of mileage. The 4L60E tends to throwup around 125k but i have heard of many that make it well past that before dying. Its possible the OP's tranny has never been serviced or rebuilt. My basic rule only applies to personal truck/suv (one that is not used to haul for a living, pull a boat/trailer/camper often or plowing, etc.). If truck/suv is new then leave fluid alone until 100k unless there are aggravating factors like lots of towing, mountain driving, etc. At 100k mark maybe go ahead and do a complete flush. But once much past that 100k mark then just a pan and filter change and even then its a gamble. I dont know the science behind the new fluid and the old seals but ive seen it many times over. The seals swell after too much of the fluid is changed on a high mile tranny. And once one of those seals gets leaking then its up to the tranny gods as to what fails....but make no mistake, it will be fatal to the tranny.
rockola1971
Full Access Member
Its possible you have a sticking valve. How do you know the tranny is not slipping? Is the fluid pink, orange or brown? Does it smell burnt?
Mudsport96
Full Access Member
This is odd. This seems like the pedal signal is getting lost somewhere. Have you scanned for codes? Do you have an app like Torque or OBDLink to watch things like tps position?
OP
OP
clandr1
Full Access Member
I've taken care of it and with the exception of a dealer flush at ~30,000 miles, I've only ever done filter and fluid changes in my garage. It is the original unit and has never been rebuilt.
OP
OP
clandr1
Full Access Member
I have scanned it and found no codes present. I have a very inexpensive code reader (link below) and will have to look and see if it is capable of reading the TPS position.
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